my phone blocked with no communication

I had a data dispute with Vodacom that I was told someone will call me as soon as the investigation is done. I didn't get any respond then on the 2nd December, I went to customer care in Menlyn to make a follow up and payment. I was told that someone called me and I didn't respond so the case was closed. No voice message was left, sms or e-mail was sent regarding that. As I was there the consultant tried to call the person who gave me a missed call but he wasn't in the office then he send him an e-mail to contact me. I didn't receive any respond then Friday the 4th I made a payment of the current balance except the data amount that was still on dispute. Monday the 7th, my phone was suspended without any communication at all. I can't even receive calls or messages.